N, N-dimethylacetamide (DMAC) yog dav siv los ua tshuaj raw khoom thiab cov kuab tshuaj organic hauv roj av, tshuaj, tshuaj, tshuaj tua kab thiab lwm yam lag luam. Nws muaj zog polarity, tshuaj stability thiab lom lom lom.
1. Kev siv dav ntawm dimethylacetamide ua rau muaj kuab paug ntau ntawm DMAC
Dimethylacetamide (DMAC) yog cov khoom siv tshuaj tseem ceeb thiab siv dav hauv kev tsim cov tshuaj tua kab mob xws li cephalosporins thiab amoxicillin. Tsis tas li ntawd, qhov muaj zog solubility ntawm dimethylacetamide ua rau nws siv dav hauv cov txheej txheem, tshuaj, cov yeeb yaj kiab yas, cov khoom cua kub-resistant, acrylonitrile spinning thiab lwm yam. Tam sim no, kev tsim cov yeeb yaj kiab txawv teb chaws, polyimide soluble polyimide, polyimide-polyperfluoroethylene-propylene composite films, polyimide (aluminium) films, soluble polyimide molding hmoov thiab lwm yam ntaub ntawv Dimethylacetamide yog feem ntau siv raws li ib tug hnyav, thiab nws kuj yog siv raws li ib tug zoo heev. Polar hnyav nyob rau hauv domestic polymer hluavtaws fiber ntau spinning teb.
Vim muaj kev ua tau zoo thiab kev siv ntau yam ntawm dimethylacetamide (DMAC), ntau cov dej khib nyiab DMAC tau muab pov tseg rau hauv ib puag ncig thaum lub sijhawm tsim khoom txhua xyoo. Cov tshuaj lom nyob rau hauv cov dej khib nyiab no tuaj yeem ua rau muaj kev puas tsuaj loj rau ib puag ncig dej.
2. Cov txheej txheem tshem tawm cov kuab tshuaj los kho DMAC cov dej khib nyiab
Tam sim no, txoj kev rho tawm, cov txheej txheem biochemical, cov txheej txheem dej supercritical oxidation, photocatalytic oxidation, lub cev thiab cov txheej txheem tshuaj, cov txheej txheem tshuaj, thiab lwm yam. Txoj kev tshem tawm cov kuab tshuaj yog undoubtedly ib tug ntau yig thiab muaj peev xwm kho txoj kev. Nws tuaj yeem tsis tsuas yog pretreat DMAC cov dej khib nyiab, tab sis kuj rov qab tau cov DMAC hnyav hauv cov dej khib nyiab thiab xa rov qab mus rau ntau lawm.
Cov kua-kua kuab extraction yog ib txoj kev lag luam uas siv lub hauv paus ntsiab lus ntawm cov kuab tshuaj sib txawv ntawm cov kuab tshuaj nyob rau hauv cov kuab tshuaj tsis sib haum los hloov cov kuab tshuaj los ntawm ib qho hnyav mus rau lwm qhov. Chloroform tuaj yeem siv los ua tus neeg sawv cev tshem tawm los kho DMAC cov dej khib nyiab, thiab cov ntsiab lus ntawm DMAC hauv cov dej khib nyiab zaum kawg tuaj yeem txo mus rau 180mg / kg.
Txoj kev ua kua-kua kuab extraction muaj tsawg zog noj thiab siab rov qab tus nqi rau tsawg-concentration DMAC.